K&N Custom Air Filter (E-3988)

K&N Custom Air Filter (E-3988)The K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K&N RK Series air cleaner assemblies for Harley Davidson motorcycles. The air filter is covered by the famous K&N Million Mile Limited Warranty. Replacement air filter for specific RK Series

but do not use an air cleaner

and vent (breather) hose

BETTER TOWING: K&N Air intake kit improves acceleration and uphill performance when towing by improving throttle response

A tube of sealing grease is provided to help ensure an airtight seal

The K&N Airforce Pre-Cleaner is a specially designed foam filter wrap made to extend the service interval of your K&N air filter when used in very dusty conditions

Enclosed air box helps protect the filter from heat in the engine bay

000 miles before service is required (depending on driving conditions)

Designed to improve throttle response and engine sound

Filter only requires cleaning every 100

All of them come with K&N's Million Mile Limited Warranty and are guaranteed to increase horsepower

The K&N 69-8704TP Typhoon air intake system is a free-flowing

It has an inner wire support that provides extra strength to protect the air filter under extreme conditions